ra_serf: Now that we use the new serf API to create the request bucket, we shouldn't set the Host header anymore, as serf will do that for us.
ra_serf: Now that we use the new serf API to create the request bucket, we shouldn't
set the Host header anymore, as serf will do that for us.

* subversion/libsvn_ra_serf/util.c: Don't set Host header on requests when using
  serf version >= 0.4.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion